add webpack config.\n add browser/node logging

gramjs/extensions/Logger.js

@@ -0,0 +1,102 @@
+let logger = null
+
+class Logger {
+    static levels = ['debug', 'info', 'warn', 'error']
+
+    constructor(level) {
+        this.level = level
+        this.isBrowser = typeof process === 'undefined' ||
+            process.type === 'renderer' ||
+            process.browser === true ||
+            process.__nwjs
+        if (!this.isBrowser) {
+            this.colors = {
+                start: '\x1b[2m',
+                warn: '\x1b[35m',
+                info: '\x1b[33m',
+                debug: '\x1b[36m',
+                error: '\x1b[31m',
+                end: '\x1b[0m',
+            }
+        } else {
+            this.colors = {
+                start: '%c',
+                warn: 'color : #ff00ff',
+                info: 'color : #ffff00',
+                debug: 'color : #00ffff',
+                error: 'color : #ff0000',
+                end: '',
+            }
+        }
+        this.messageFormat = '[%t] [%l] - [%m]'
+    }
+
+    /**
+     *
+     * @param level {string}
+     * @returns {boolean}
+     */
+    canSend(level) {
+        return (Logger.levels.indexOf(this.level) <= Logger.levels.indexOf(level))
+    }
+
+    /**
+     * @param message {string}
+     */
+    warn(message) {
+        this._log('warn', message, this.colors.warn)
+    }
+
+    /**
+     * @param message {string}
+     */
+    info(message) {
+        this._log('info', message, this.colors.info)
+    }
+
+    /**
+     * @param message {string}
+     */
+    debug(message) {
+        this._log('debug', message, this.colors.debug)
+    }
+
+    /**
+     * @param message {string}
+     */
+    error(message) {
+        this._log('error', message, this.colors.error)
+    }
+
+    format(message, level) {
+        return this.messageFormat.replace('%t', new Date().toISOString())
+            .replace('%l', level.toUpperCase())
+            .replace('%m', message)
+    }
+
+    static getLogger() {
+        if (!logger) {
+            logger = new Logger('debug')
+        }
+        return logger
+    }
+
+    /**
+     * @param level {string}
+     * @param message {string}
+     * @param color {string}
+     */
+    _log(level, message, color) {
+        if (this.canSend(level)) {
+            if (!this.isBrowser) {
+                console.log(color + this.format(message, level) + this.colors.end)
+            } else {
+                console.log(this.colors.start + this.format(message, level), color)
+            }
+        } else {
+            console.log('can\'t send')
+        }
+    }
+}
+
+module.exports = Logger